<template>
  <div class="login_container">
    <!-- 头像 -->
    <div class="login_box">
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="logo" srcset="">
      </div>
      <!-- 登录表单 -->
      <el-form ref="loginFormRef" :model="loginForm" :rules="rules" label-width="0px" class="login-form">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input v-model="loginForm.password" prefix-icon="iconfont icon-lock" type="password"></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  name: 'login',
  data () {
    return {
      loginForm: {
        username: '',
        password: ''
      },
      rules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '用户名长度为 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 10, message: '密码长度为 6 到 10 个字符', trigger: 'blur' }
        ]
      }
    }
  },
  methods: {
    resetForm () {
      this.$refs.loginFormRef.resetFields()
    },
    login () {
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid) return

        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登陆失败')
        this.$message.success('登陆成功')
        window.sessionStorage.setItem('token', res.data.token)
        this.$router.push('/home')
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login_container {
  background: #2b4b6b;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #ffffff;
  border-radius: 3px;
  position: absoulte;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.25);
  display: flex;
  flex-direction: column;
  justify-content: center;

  .avatar_box {
    height: 120px;
    width: 120px;
    border: 1px solid #eeeeee;
    border-radius: 50%;
    padding: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.25);
    transform: translate(0, -50%);
    background-color: #ffffff;
    align-self: center;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eeeeee;
    }
  }
}
.login-form {
  padding: 0 20px;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>
